74HCT401 Philips, 74HCT401 Datasheet - Page 10

• Manufacturer Part Number: 74HCT401
• Description: 8-bit synchronous BCD down counter
• Manufacturer: Philips

Philips Semiconductors
AC WAVEFORMS
December 1990
8-bit synchronous BCD down counter
(1) HC : V
Fig.7
(1) HC : V
Fig.9
(1) HC : V
Fig.11 Waveforms showing hold and set-up times
HCT: V
HCT: V
HCT: V
Waveforms showing the clock input (CP) to
TC propagation delays, the clock pulse
width, the output transition times and the
maximum clock pulse frequency.
Waveforms showing PL, MR, P
TC propagation delays.
for MR or PE to CP.
M
M
M
M
M
M
= 1.3 V; V
= 1.3 V; V
= 1.3 V; V
= 50%; V
= 50%; V
= 50%; V
I
I
I
I
I
I
= GND to V
= GND to V
= GND to V
= GND to 3 V.
= GND to 3 V.
= GND to 3 V.
CC
CC
CC
.
.
.
n
to
10
(1) HC : V
Fig.8
(1) HC : V
Fig.10 Waveforms showing removal time for
The shaded areas indicate when the input is permitted to
change for predictable output performance.
(1) HC : V
Fig.12 Waveforms showing hold and set-up times
HCT: V
HCT: V
HCT: V
Waveforms showing the TE to
TC propagation delays.
MR and PL.
for P
M
M
M
M
M
M
= 1.3 V; V
= 1.3 V; V
= 1.3 V; V
= 50%; V
= 50%; V
= 50%; V
n
, PE to CP.
I
I
I
I
I
I
= GND to V
= GND to V
= GND to V
= GND to 3 V.
= GND to 3 V.
= GND to 3 V.
74HC/HCT40102
CC
CC
CC
.
.
.
Product specification